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Latham Group
SWIM

142 hedge funds and large institutions have $572M invested in Latham Group in 2026 Q1 according to their latest regulatory filings, with 24 funds opening new positions, 44 increasing their positions, 53 reducing their positions, and 29 closing their positions.

New
Increased
Maintained
Reduced
Closed

0% more funds holding in top 10

Funds holding in top 10: 4 → 4 (0)

0.1% less ownership

Funds ownership: 91.1% → 91% (-0.1%)

5% less funds holding

Funds holding: 149 → 142 (-7)

15% less capital invested

Capital invested by funds: $675M → $572M (-$103M)

17% less repeat investments, than reductions

Existing positions increased: 44 | Existing positions reduced: 53

17% less first-time investments, than exits

New positions opened: 24 | Existing positions closed: 29

Holders
142
Holders Change
-7
Holders Change %
-4.7%
% of All Funds
1.75%
Holding in Top 10
4
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.05%
New
24
Increased
44
Reduced
53
Closed
29
Calls
$5K
Puts
–
Net Calls
+$5K
Net Calls Change
+$132K

Top Buyers

1
AAM
ACK Asset Management
Connecticut
+$32.9M
2
Wellington Management Group
Wellington Management Group
Massachusetts
+$15.4M
3
Dimensional Fund Advisors
Dimensional Fund Advisors
Texas
+$3M
4
Jacobs Levy Equity Management
Jacobs Levy Equity Management
New Jersey
+$2.65M
5
Arrowstreet Capital
Arrowstreet Capital
Massachusetts
+$2.05M

Top Sellers

1
Citadel Advisors
Citadel Advisors
Florida
-$16.8M
2
DCM
Driehaus Capital Management
Illinois
-$13M
3
VC
Voss Capital
Texas
-$7.98M
4
UBS Group
UBS Group
Switzerland
-$5.16M
5
Fidelity Investments
Fidelity Investments
Massachusetts
-$2.82M
Name Holding Trade Value Shares
Change 		Change in
Stake
PCM
1
Pamplona Capital Management
New York
$278M – – –
Wellington Management Group
2
Wellington Management Group
Massachusetts
$49.2M +$15.4M +2,412,857 +36%
AAM
3
ACK Asset Management
Connecticut
$27.7M +$32.9M +5,160,000 New
KeyBank National Association
4
KeyBank National Association
Ohio
$22M – – –
Fidelity Investments
5
Fidelity Investments
Massachusetts
$19.7M -$2.82M -443,017 -11%
Dimensional Fund Advisors
6
Dimensional Fund Advisors
Texas
$18.1M +$3M +470,123 +16%
BlackRock
7
BlackRock
New York
$17.6M +$307K +48,141 +1%
WA
8
Wasatch Advisors
Utah
$13.8M -$1.26M -198,206 -7%
VCM
9
Vanguard Capital Management
Pennsylvania
$12.4M +$14.7M +2,303,379 New
FG
10
Formula Growth
Quebec, Canada
$6.74M +$319K +50,000 +4%
Geode Capital Management
11
Geode Capital Management
Massachusetts
$6.25M +$289K +45,309 +4%
OCAM
12
Onex Canada Asset Management
Ontario, Canada
$6.04M -$124K -19,514 -2%
EA
13
Emerald Advisers
Pennsylvania
$5.41M +$198K +31,091 +3%
State Street
14
State Street
Massachusetts
$5.09M +$50.7K +7,954 +0.8%
CIP
15
CAS Investment Partners
Connecticut
$4.99M -$88.3K -13,852 -1%
SAM
16
Silvercrest Asset Management
New York
$4.91M +$666K +104,510 +13%
CP
17
CenterBook Partners
Connecticut
$4.47M -$2.63M -412,628 -33%
Citadel Advisors
18
Citadel Advisors
Florida
$4.45M -$16.8M -2,634,627 -76%
RC
19
Roubaix Capital
Colorado
$3.55M -$146K -22,991 -3%
EMFAT
20
Emerald Mutual Fund Advisers Trust
Pennsylvania
$3.45M – – –
Goldman Sachs
21
Goldman Sachs
New York
$3.17M +$709K +111,236 +23%
EMCIP
22
Ewing Morris & Co Investment Partners
Ontario, Canada
$3.11M -$1.67M -261,684 -31%
RHJA
23
Rice Hall James & Associates
California
$2.81M -$38.1K -5,977 -1%
Renaissance Technologies
24
Renaissance Technologies
New York
$2.67M +$262K +41,100 +9%
VPM
25
Vanguard Portfolio Management
Pennsylvania
$2.54M +$3.02M +473,765 New
1
2 3 4 5

SWIM Hedge Fund Activity: Q1 2026 in Review

142 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in Latham Group (SWIM) for Q1 2026, worth a combined $572M — down 15% from $675M a quarter earlier.

Sellers outnumbered buyers: 29 funds closed out of SWIM and 24 opened new positions — a net loss of 5 holders — while 53 trimmed existing stakes and 44 added.

The largest buyer was ACK Asset Management, opening a new position worth an estimated $32.9M. The largest seller was Citadel Advisors, cutting an estimated $16.8M.

  • 142 institutional investors held Latham Group (SWIM) as of Q1 2026, down from 149 in Q4 2025.
  • Funds reported $572M of Latham Group stock for Q1 2026, down 15% quarter-over-quarter.
  • 24 funds opened new Latham Group positions in Q1 2026 and 29 closed out, a net change of -5 holders.
  • The largest Latham Group buyer in Q1 2026 was ACK Asset Management, an estimated $32.9M added.
  • The largest Latham Group seller in Q1 2026 was Citadel Advisors, an estimated $16.8M sold.

Based on aggregated 13F filings for Q1 2026.